Or you could make Rebound a Magic Bounce that only works on the turn Collosoil switches in (like Syclant's Mountanier), altough if this is too powerful (it is) It could return a random hazzard from the ones that are on the field (or just being unaffected by hazzards in general might work)

Height: 6' 11"
Weight: 1205.6 lbs / 548 kgEvolution:Colosshale -> Level-Up with Dig -> ColossoilType: Dark/WaterDark: Dark STAB; Immunity to all telepathic and telekinetic attacks, better performance in all darkened and especially twilight conditions. Can use any Dark-type attack regardless of Attraction.Water: Water STAB; Can breathe and have excellent mobility when underwater, are less capable on land unless they are entirely amphibious.

Abilities:Rebound: (Can Be Activated) The Pokemon is able to bounce one layer of an entry hazard back from their side of the field to the other side with their immense strength and intuition.Storm Drain: (Innate) This Pokemon lures all water attacks to itself, altering their course away from partner Pokemon. It absorbs the water and increases its Special Attack by one (1) stage. This boost is maintained at the end of each round.Flare Boost (DW): (Innate) This Pokemon's body can harness the heat from a burn into internal energy, fueling its mental capabilities. When Burned, the Pokemon's special attacks have two (2) more Base Attack Power.Stats: 83 / 42 / 52 / 71 / 62 / 85

Abilities:Rebound: (Can Be Activated) The Pokemon is able to bounce one layer of an entry hazard back from their side of the field to the other side with their immense strength and intuition.Guts: (Innate) This Pokemon is tenacious and will work ever harder when under a status condition, raising the base attack power of all its physical attacks by two (2). Pokemon with Guts ignore the attack drop from burn.Pressure (DW): (Innate) This Pokemon’s presence fills the air with intense anxiety, and any damaging or status attack launched at this Pokemon costs the opposing Pokemon two (2) more energy to perform.